JPH11130140A - Pierceable sealing type lid material and package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lid material having a superior sealing and holding properties at a piercing section, and a crushable package having a superior gas-barrier properts in application of the lid material. SOLUTION: This package is constituted such that contents are stored in a crushable container comprising a piercing sealable lid material 1-1 composed of a laminated layer including an unstretched nylon layer, a gas-barrier layer, and a multi-laminated polyethylene layer comprised of a linear low-density polyethylene, low density polyethylene and medium density polyethylene and a flange having a superior gas-barrier properties, and the pierceable sealing lid material 1-1 is thermally adhered to the flange to fix it.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piercing-sealing lid and a package used for a dispensing device of a type in which a tip of a suction cylinder of a pump is pierced to take out contents.

[0002]

2. Description of the Related Art A packaging bag used in a method of taking out the packaged contents by piercing the tip of a suction cylinder attached below a pump is disclosed in Japanese Patent No. 2661868. A liquid storage bag in which a portion other than the bottom is formed by a laminate of a nylon film and a polyolefin film and a bottom is formed by a laminate of an unstretched nylon film and a polyolefin film, or described in JP-A-7-172466. A self-standing bag made of a polyolefin resin such as polyethylene or polypropylene, and a non-stretched nylon film and a film made by laminating a polyolefin resin film such as polyethylene or polypropylene. A liquid storage bag having a configuration in which an upper portion is closed is known. However, in the case of the above-mentioned liquid storage bag, the shape of the liquid storage bag is not suitable for use as a dispensing device, and the piercing and sealing properties of a film composed of a laminate of an unstretched nylon film and a polyolefin film are also considered. It is not suitable for packaging of contents that are easily deteriorated by the influence of oxygen due to poor gas barrier properties of the liquid storage bag and that require fragrance retention, as well as insufficient retention of the piercing part. There was a disadvantage that there was no.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to pierce and seal a piercing-sealing lid material which maintains sealing performance even when the tip of a suction cylinder of a pump pierces the lid material and has excellent gas barrier properties. It is an object of the present invention to provide a crushable package having a sealing lid.

[0004]

A pierceable sealing cover made of a laminate of an unstretched nylon layer and a multilayer polyethylene layer makes it possible to pierce the suction tube of the pump into the cover at the piercing portion. It can have excellent sealing and holding properties.

[0005] In the above piercing and sealing lid material, the multilayer polyethylene layer may be a laminate of a linear low-density polyethylene layer, a medium-density polyethylene layer and a linear low-density polyethylene layer, or a linear low-density polyethylene layer. By forming a laminate of a medium-density polyethylene layer, a low-density polyethylene layer, a medium-density polyethylene layer, and a linear low-density polyethylene layer, it is possible to further improve the sealing and holding properties at the piercing portion. .

[0006] In the above piercing and sealing lid material, a structure in which a gas barrier layer comprising an ethylene-vinyl alcohol copolymer, polyvinylidene chloride, and a metal oxide vapor deposition layer is laminated on the outer or inner surface of the unstretched nylon layer. By doing so, while piercing sealability and holding properties are excellent,
A lid material having excellent gas barrier properties can be obtained.

[0007] The piercing and sealing lid is filled with the contents in a crushable container having a flange excellent in flexibility and gas barrier properties, and the flange is covered with the flange so as to cover the opening of the crushable container. By providing a package that is attached and sealed by thermal bonding, airtightness is reliably maintained even when the lid material is penetrated and the suction cylinder of the pump is pierced. Therefore, in this state, the pump is operated to take out the contents, and as the contents decrease, the crushable container is crushed and crushed, so that the contents can be taken out by operating the pump.

In the above-mentioned package, the crushable container comprises a laminate of a polyolefin resin layer, a gas barrier resin layer made of an ethylene-vinyl alcohol copolymer or polyvinylidene chloride, and a polyolefin resin layer. By doing so, it is possible to obtain a package having excellent storage stability even when contents that are easily degraded by oxygen or contents that require fragrance retention are stored.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 are cross-sectional views showing first to fourth embodiments of the piercing and sealing lid material of the present invention, FIG. 5 is a cross-sectional view showing a package of the present invention, and FIG. 6 is a package of the present invention. It is sectional drawing which shows the state used for the distribution device, and is 1-1, 1-
2, 1-3, 1-4 are lids, 2 is a crushable container, 2a is a crushable container flange, 3 is a package, 4 is a rigid container, 4a is a rigid container flange, 5 is a vent, 6 is a lid. Body, 6a is an engaging portion, 6b is a pressing portion, 7 is a pump, 8 is a suction cylinder, 9 is a content, 10 is a space, 11 is an unstretched nylon layer, 12 is an adhesive layer, and 13 is a linear low density. A polyethylene layer, 14 is a medium density polyethylene layer, 15 is a low density polyethylene layer, and 16 is a gas barrier layer.

The lid material 1-1 according to the first embodiment of the present invention is similar to the lid material shown in FIG.
As shown in FIG. 1, the unstretched nylon layer 11, the adhesive layer 12, the linear low-density polyethylene layer 13, the medium-density polyethylene layer 14, and the linear low-density polyethylene layer 13 are sequentially laminated from the outer surface. Comparing the piercing and sealing performance of the linear low-density polyethylene layer 13 and the single-layer medium-density polyethylene layer 14, the linear low-density polyethylene layer 13 is better than the medium-density polyethylene layer.
Although it is superior to 14, the strength of the lid is increased by forming the multilayer polyethylene layer into a three-layer structure of the linear low-density polyethylene layer 13, the medium-density polyethylene layer 14, and the linear low-density polyethylene layer 13. The impact strength and stress cracking resistance can be improved, and the multilayer polyethylene layer as a whole has excellent pierce-sealing properties and pierce-portion retention properties, so it can be pierced by vibrations etc. when operating the pump. It is possible to prevent the sealing performance of the piercing portion from being impaired due to the displacement of the portion.

The cover 1-2 according to the second embodiment of the present invention is similar to the cover shown in FIG.
As shown in the figure, the unstretched nylon layer 11, the adhesive layer 12, the linear low-density polyethylene layer 13, the medium-density polyethylene layer 14, the low-density polyethylene layer 15, the medium-density polyethylene layer 14, and the linear low-density polyethylene layer in order from the outer surface. 13 are stacked. When the piercing and sealing properties of the single layers of the linear low-density polyethylene layer 13, the medium-density polyethylene layer 14, and the low-density polyethylene layer 15 are compared, the order is linear low-density polyethylene> low-density polyethylene> medium-density polyethylene. However, the multilayer polyethylene layer is a linear low-density polyethylene layer 13
And medium density polyethylene layer 14, low density polyethylene layer 15, medium density polyethylene layer 14, and linear low density polyethylene layer 13
By increasing the ratio of the thickness of the linear low-density polyethylene layer to the five-layer configuration, the impact strength in the thickness direction of the multilayer polyethylene layer is improved, and the piercing sealing property and the retaining property of the piercing portion are improved. Since it can be further improved, it is possible to prevent the position of the piercing portion from being displaced due to vibration or the like at the time of operating the pump, thereby preventing the sealing performance of the piercing portion from being impaired.

A cover 1-3 according to a third embodiment of the present invention is shown in FIG.
As shown in FIG. 3, a gas barrier layer 16 is laminated on the cover material 1-1 of the first embodiment, and the gas barrier layer 16, the unstretched nylon layer 11, the adhesive layer 12, the linear low-density polyethylene layer 13, and the In this configuration, the medium density polyethylene layer 14 and the linear low density polyethylene layer 13 are laminated.

FIG. 4 shows a lid member 1-4 according to a fourth embodiment of the present invention.
As shown in the figure, a gas barrier layer 16 was laminated on the cover material 1-2 of the second embodiment, and the gas barrier layer 16, the unstretched nylon layer 11, the adhesive layer 12, the linear low-density polyethylene layer 13, and the Medium density polyethylene layer 14 and low density polyethylene layer
It has a configuration in which a layer 15, a medium-density polyethylene layer 14, and a linear low-density polyethylene layer 13 are laminated.

The gas barrier layer 16 according to the third and fourth embodiments
For example, an ethylene-vinyl alcohol copolymer, polyvinylidene chloride, or a metal oxide deposited layer can be used. In the third and fourth embodiments, the gas barrier layer 16
Is laminated on the outer surface of the unstretched nylon layer 11, but the gas barrier layer 16 may be laminated on the inner surface of the unstretched nylon layer 11. In particular, when an ethylene-vinyl alcohol copolymer is used as the gas barrier layer 16, it is preferable that the ethylene-vinyl alcohol copolymer be laminated on the inner surface because of its hygroscopicity.

When an ethylene-vinyl alcohol copolymer is used as the gas barrier layer 16, the unstretched nylon layer 11 and the ethylene-vinyl alcohol copolymer film may be laminated using an adhesive, A multilayer film in which an ethylene-vinyl alcohol copolymer and nylon are coextruded may be used. When using polyvinylidene chloride as the gas barrier layer 16, it is common to use an unstretched nylon film coated with polyvinylidene chloride, but polyvinylidene chloride, an adhesive resin and nylon are coextruded. Multi-layer films may be used. When using a metal oxide vapor-deposited layer as the gas barrier layer, use an unstretched nylon having the metal oxide vapor-deposited layer formed thereon, and apply an adhesive to the metal oxide vapor-deposited layer surface or the unstretched nylon surface and the multilayer polyethylene layer. Use and laminate.

The linear low-density polyethylene constituting the lid material of the first to fourth embodiments has a density of 0.915 to 0.9.
25 has a density of 0.2 as a medium density polyethylene.
930 to 0.935 are preferable, and low density polyethylene having a density of 0.915 to 0.925 is preferable.
When the polyethylene layer has a laminated structure of a linear low-density polyethylene layer, a medium-density polyethylene layer, and a linear low-density polyethylene layer, the ratio of the thickness of each layer is 1.0 to 1.5: 0.5.
1.0 to 1.5 is preferred, and the multilayer polyethylene layer is a laminate of a linear low density polyethylene layer, a medium density polyethylene layer, a low density polyethylene layer, a medium density polyethylene layer, and a linear low density polyethylene layer. In the case of the configuration, the ratio of the thickness of each layer is 1.0 to 1.5: 0.5 to 1.0: 1.0 to 1.5: 0.5 to 1.5.
0: 1.0 to 1.5 is preferred. The thickness of the multilayer polyethylene layer is preferably 0.10 to 0.14 mm.

As shown in FIG. 5, an embodiment of a package 3 using the pierceable and sealing lid 1 of the present invention is to pierce and seal after filling the contents 9 into a crushable container 2 having a flange 2a. In this configuration, the flexible lid 1 is attached to the flange 2a of the collapsible container 2 by heat bonding and sealed. In this embodiment, in order to prevent air from remaining in the inside of the package, the lid is formed to have a concave central portion. However, it is not necessary to form the lid to have a concave central portion. It may be used as a material. In the case where the contents 9 to be filled are easily oxidized and deteriorated, it is preferable that air does not remain in the inside of the package, but in the case of contents which are not easily affected by oxygen, a flat lid material is used. There is no problem if it is used and packed with some air left inside.

The crushable container 2 constituting the package 3 of the present invention comprises a polyolefin resin layer and a gas barrier resin layer made of ethylene-vinyl alcohol copolymer (EVOH) or polyvinylidene chloride (PVDC) and a polyolefin resin layer. It is composed of a laminate with a resin layer. As the polyolefin resin layer, low density polyethylene (LDP)
E), linear low-density polyethylene (LLDPE), polypropylene (PP), ethylene-propylene copolymer (E
P) can be used. As a specific example of the laminated structure of the crushable container 2, (inner surface) LDPE / EVOH / LDPE
(Outer surface), (Inner surface) LLDPE / EVOH / LLDPE
(Outer surface), (Inner surface) LDPE / EVOH / EP (Outer surface), (Inner surface) LLDPE / EVOH / EP (Outer surface),
(Inner surface) LDPE / EVOH / PP (Outer surface), (Inner surface)
LLDPE / EVOH / PP (outside), (inside) EP /
EVOH / EP (outer surface). The laminated film is manufactured by multi-layer extrusion, and may be a multi-layer extruded film having an adhesive resin layer between each layer in order to increase the adhesive strength between the layers. It is manufactured by vacuum forming or pressure forming using a multilayer sheet having a thickness of 0.5 to 1.0 mm, but it can also be manufactured by blow molding of a multilayer.

The dispensing device using the package 3 of the present invention
As shown in FIG. 6, the package 3 is housed inside a rigid container 4 having a ventilation hole 5 at the bottom and a flange 4 a having a shape capable of closely storing the crushable container 2.
A pump 7 provided with a suction cylinder 8 extending downward by superposing the flange 2a of the collapsible container 2 on the flange 4a of the
Is attached to the center portion, and the lid 6 having the pressing portion 6b formed in a circumferential shape facing the flange 4a of the rigid container 4 and the engaging portion 6a formed in the peripheral edge is used for the packaging body 3. The engaging portion 6a of the lid 6 is engaged with the lower surface of the flange 4a of the rigid container 4 in a state where the upper surface of the flange 2a of the crushable container 2 is pressed by the pressing portion 6b of the lid 6 on the upper portion of the stored rigid container 4. At the same time, the suction cylinder 8 is pierced into the cover 1 of the package 3 and inserted into the package 3. When the dispensing device is assembled, the flange 2a of the collapsible container 2 is fixed on the flange 4a of the rigid container 4 by the pressing portion 6b of the lid 6, so that the package 3 and the rigid container 4 are integrated. It is.

When the contents 9 are taken out by operating the pump 7 of the dispensing device shown in FIG. 6, as the amount of the contents 9 decreases, the collapsible container 2 is completely sealed by the lid 1. Since the airtightness of the piercing portion between the lid member 1 and the suction tube 8 is maintained, outside air does not enter the inside of the collapsible container 2 and the inside thereof has a negative pressure. On the other hand, since a vent hole 5 is formed in the bottom of the rigid container 4 and communicates with the atmosphere, a pressure difference is generated between the inside and the outside of the crushable container 2 at the bottom of the crushable container 2, and The bottom is pushed up to be in a crushed state, and the volume of the crushable container 2 is reduced. As contents 9 are further taken out,
The crushable container 2 is crushed by the reduced volume of the contents 9 and the capacity is reduced, and a space 10 is formed between the bottom of the rigid container 4 and the bottom of the crushable container 2. Contents 9
Is completely taken out, the crushable container 2 is completely crushed, and is brought into close contact with the lower surface of the lid member 1 and the periphery of the suction tube 8, so that the contents can be completely sucked out and used. You can do it. As described above, since air does not enter the inside of the package 3 during use of the dispensing device, the contents can be reliably maintained without deterioration due to oxidation or the like. is there.

When the contents 9 are completely removed and used as described above, the engaging portion 6a of the lid 6 and the rigid container 4 are removed.
Is disengaged from the lower surface of the flange 4a to separate the rigid container 4 and the lid 6, the empty package 3 is taken out from the rigid container 4, and a new package filled with the contents is taken out. 3
And by assembling as shown in FIG.
It can be used again as a distribution device. Since the lid 6 provided with the rigid container 4 and the pump 7 can be used repeatedly, the package 3
Can be used as a dispensing device for refilling simply by replacing with a new one. Moreover, even in the case of viscous contents, the viscous contents can be completely used up without leaving the contents in the package 3.

As the rigid container 4 constituting the dispensing device of the present invention, a rigid container manufactured by injection molding using a resin such as high-density polyethylene, polypropylene, or polyester can be suitably used. Containers, metal containers, pottery containers, and composite containers thereof can also be used. It is preferable to use a pump for a generally used viscous substance. Further, a synthetic resin, a rubber elastic body, or the like having good adhesion may be used or integrally molded with the engaging portion of the lid.

[0023]

According to the present invention, a pierceable and sealing lid made of a laminate of an undrawn nylon layer and a multilayer polyethylene layer is used. The multilayer polyethylene layer is composed of a linear low-density polyethylene layer, a medium-density polyethylene layer, and a linear low-density polyethylene layer. Or a laminate of a linear low-density polyethylene layer, a medium-density polyethylene layer, a low-density polyethylene layer, a medium-density polyethylene layer, and a linear low-density polyethylene layer, so that the pump suction cylinder is The lid material having extremely excellent sealing and holding properties at the piercing portion in a state where the piercing is performed. In the above-mentioned piercing-sealing lid material, a gas barrier layer composed of an ethylene-vinyl alcohol copolymer, polyvinylidene chloride, and a metal oxide vapor-deposited layer is laminated on the outer or inner surface of the unstretched nylon layer, In addition, it is possible to provide a lid material having excellent piercing and sealing properties, and excellent in fragrance retention properties and gas barrier properties. The piercing-sealable lid is filled with the contents in a crushable container having a flange and having excellent flexibility and gas barrier properties, and is covered with the flange by heat bonding to cover the opening of the crushable container and sealed. With this configuration, the airtightness can be reliably maintained even when the suction member of the pump is pierced by penetrating the lid member. In this state, the pump is operated to take out the contents, and as the contents decrease, the crushable container is crushed and crushed, so that the contents can be taken out by operating the pump without leaving the contents. In the above package, the crushable container is constituted by a laminate of a polyolefin resin layer and a gas barrier resin layer made of an ethylene-vinyl alcohol copolymer or polyvinylidene chloride and a polyolefin resin layer, Even when contents that easily change in quality due to oxygen or contents that require fragrance retention properties are stored, a package having excellent storage stability can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of a pierceable and sealing lid material according to the present invention.

FIG. 2 is a cross-sectional view showing a second embodiment of the pierceable and sealing lid material of the present invention.

FIG. 3 is a sectional view showing a third embodiment of the pierceable and sealing lid material of the present invention.

FIG. 4 is a sectional view showing a fourth embodiment of the pierceable and sealing lid material of the present invention.

FIG. 5 is a sectional view showing a package of the present invention.

FIG. 6 is a cross-sectional view showing a state in which the package of the present invention is used in a distribution device.

[Explanation of symbols]

1, 1-1, 1-2, 1-3, 1-4 Piercing and sealing lid material 2 Crushable container 2a Crushable container flange 3 Packaging 4 Rigid container 4a Rigid container flange 5 Vent hole 6 Lid 6a Joint 11 Unstretched nylon layer 6b Pressing part 12 Adhesive layer 7 Pump 13 Linear low density polyethylene layer 8 Suction cylinder 14 Medium density polyethylene layer 9 Contents 15 Low density polyethylene layer 10 Space 16 Gas barrier layer

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Hidehiko Masaki 1-1-1, Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo Dai Nippon Printing Co., Ltd.

Claims (7)

[Claims] 1. A pierceable and sealing lid material comprising a laminate of an undrawn nylon layer and a multilayer polyethylene layer. 2. The puncture seal according to claim 1, wherein the multilayer polyethylene layer has a structure in which a linear low-density polyethylene layer, a medium-density polyethylene layer, and a linear low-density polyethylene layer are laminated. Lid material. 3. The multilayer polyethylene layer has a structure in which a linear low density polyethylene layer, a medium density polyethylene layer, a low density polyethylene layer, a medium density polyethylene layer, and a linear low density polyethylene layer are laminated. 2. The pierceable and sealing lid material according to claim 1. 4. A pierceable and sealing lid material according to claim 1, wherein a gas barrier layer is laminated on an outer surface or an inner surface of said unstretched nylon layer. 5. The pierceable sealing material according to claim 4, wherein said gas barrier layer comprises an ethylene-vinyl alcohol copolymer, polyvinylidene chloride, or a metal oxide vapor-deposited layer. 6. The puncture-sealable lid material according to claim 1, wherein the contents are filled into a crushable container having a flange excellent in flexibility and gas barrier properties, and the crushable container is sealed. A package comprising a structure which covers the opening and is attached to the flange by thermal bonding and sealed. 7. The crushable container comprises a laminate of a polyolefin resin layer, a gas barrier resin layer made of an ethylene-vinyl alcohol copolymer or polyvinylidene chloride, and a polyolefin resin layer. The package according to claim 6.